With gasoline prices down 33% from a year ago and buyers cooling toward electric vehicles, Nissan dealers worry that weak demand for used electric Leaf cars will put a flood of used models on the market.

The German government is expected to approve new incentives for corporate purchases of electric vehicles on Wednesday in a bid to recharge the struggling market for battery-powered cars, according to several people familiar with the situation.

GM is readying a one-two punch in the electric-car market, hoping to gain against Tesla with a next-generation Chevrolet Volt, as well as a $30,000 all-electric vehicle called the Chevrolet Bolt, slated for 2017.

At first blush, Mahindra & Mahindra Ltd. and the FIA’s Formula E racing series are strange bedfellows. Mahindra is India’s biggest sport-utility seller and best known in the U.S. for its small tractors. It also has a big IT business in the U.S., a startup scooter company, and a stable of other businesses. Formula E race cars are among the...